Introduction

In everyday life, we often talk about the future with real possibilities: plans, promises, warnings, and likely results. The First Conditional helps you connect a possible future situation with its consequence. In this unit, you will learn how to build clear sentences like: “If it rains, we will stay at home.” This structure is very common in conversations about work, travel, study, and daily routines.

Learning Objectives

Learning Objectives
By the end of this unit, you will be able to: form First Conditional sentences; choose the correct verb forms in the if-clause and the main clause; use the First Conditional to give advice, make promises, and talk about real future possibilities and their consequences.

1) What the First Conditional Means

We use the First Conditional to talk about a future situation that is possible (not imaginary). The speaker thinks the condition can happen, and then the result will follow.

Examples:

If I finish work early, I will call you.

If they miss the bus, they will be late.

Important concept
The First Conditional is for real future possibilities: a possible condition and a likely consequence.

2) Form: If + Present Simple, will + Base Verb

The most common form is:

If + present simple, will + base verb.

Examples:

If it rains, we will take a taxi.

If you study tonight, you will pass the test.

Positive, Negative, and Questions

Positive: If she arrives on time, we will start the meeting.

Negative (in the result): If you don’t hurry, you won’t catch the train.

Negative (in the condition): If they don’t have time, they will come tomorrow.

Question: What will you do if it rains?

Warning
Do not use “will” in the if-clause: “If it will rain” is not correct in the First Conditional. Use present simple: “If it rains, …”

3) Word Order and Punctuation

You can put the if-clause first or second. The meaning stays the same, but the punctuation changes.

If-clause first: Use a comma after the if-clause.

If I see Anna, I will tell her.

Main clause first: No comma is needed.

I will tell her if I see Anna.

4) Common Uses in Real Life

Plans: If the weather is good, we will have a picnic.

Promises: If you help me, I will help you tomorrow.

Warnings: If you touch that, you will burn your hand.

Advice: If you feel tired, you will sleep better if you go to bed early.

Practice

Practice section
Complete the sentences using the First Conditional. Write the correct form in each answer.